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Mechanical Engineering - Hydraulic Machines

Exercise : Hydraulic Machines - Section 3
16.
The efficiency of a hydraulic press is given by (where W = Weight lifted by ram, P = Force applied on plunger, A = Area of ram, and a = Area of plunger)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
Braking jet in an impulse turbine is used
to break the jet of water
to bring the runner to rest in a short time
to change the direction of runner
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
The water in a jet propelled boat is drawn through the openings facing the direction of motion of the boat. The efficiency of propulsion is given by
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Head developed by a centrifugal pump is
proportional to diameter of impeller
proportional to speed of impeller
proportional to diameter and speed of impeller
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
The ratio of the normal force of jet of water on a plate inclined at an angle of 30° as compared to that when the plate is normal to jet, is
1/2
1/2
1
2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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